Having issues with my plotter, wont find satellites. Have had several emails with Garmin tech support and they have posted out a data card with V3.40 s/w on it, I'm currently on V2.90. Plugged card into unit and selected update software option. The unit starts the process saying its "scanning for marine devices" and progress bar increases from 0 to about 20%. It then jumps to 100% and says s/w will be updated in 5 seconds. The unit then goes to the "welcome" screen and stays there for >5mins.
My question is, once the s/w has been read from the card should the unit reboot within a reasonable length of time? Does it need to see satellites to finish the install? Any comments appreciated. Dave